Color

#ec181f

#ec181f
hex#ec181f
rgbrgb(236, 24, 31)
hslhsl(358, 85%, 51%)
oklchoklch(0.599 0.236 27.5)
Closest name: Alarm (#ec0003)Relative luminance 0.1859

Colors that go with #ec181f

Charcoal, Royal Blue and Steel Blue lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#18ece5

#ec1889 · #ec7b18

#1fec18 · #181fec

Split-complementary

Open in tool →

#18ec7b · #1889ec

#89ec18 · #18ece5 · #7b18ec

Contrast

#ec181f as textRatioAAAA largeAAAFix
Aaon white
4.45:1failpassfail
  • AA: use #e7131a as the text (4.66:1)
  • AAA: use #b30f14 as the text (7.01:1)
  • AA: or shift the background to #050505 (4.58:1)
Aaon black
4.72:1passpassfail
  • AAA: use #f3686d as the text (7.01:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #ec181f as the background.

Brands using this color

Fonts for this mood

#ec181f reads as warm, vivid, playful. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #ec181f
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #ec181f and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/ec181f-c49f9c-62cb95-2d251f-f1e9ed?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md